工厂方法模式(选自《设计模式之禅》)

人类接口:

public interface Human {
    // 每个人种的皮肤都有相应的颜色
    public void getColor();
    // 人类会说话
    public void talk();
}

黑色人种:

public class BlackHuman implements Human {

    @Override
    public void getColor() {
        System.out.println("黑色人种皮肤是黑色!");
    }

    @Override
    public void talk() {
        System.out.println("黑人会说话,一般人听不懂!");
    }

}

黄色人种:

public class YellowHuman implements Human {

    @Override
    public void getColor() {
        System.out.println("黄色人种皮肤是黄色!");
    }

    @Override
    public void talk() {
        System.out.println("黄色人种会说话,一般说的都是双字节!");
    }

}

白色人种:

public class WhiteHuman implements Human {

    @Override
    public void getColor() {
        System.out.println("白色人种皮肤是白色!");
    }

    @Override
    public void talk() {
        System.out.println("白色人种会说话,一般都是单字节!");
    }

}

抽象工厂类:

public abstract class AbstractHumanFactory {
    public abstract <T extends Human> T createHuman(Class<T> c);
}

具体工厂类:

public class HumanFactory extends AbstractHumanFactory {

    @Override
    public <T extends Human> T createHuman(Class<T> c) {
        Human human = null;
        try {
            human = (Human) Class.forName(c.getName()).newInstance();
        } catch (Exception e) {
            System.out.println("人种生成错误!");
        }
        
        return (T) human;
    }

}

女娲造人:

public class NvWa {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        
        AbstractHumanFactory yinYangLu = new HumanFactory();
        
        System.out.println("造出的第一批人是白色人种!");
        Human whilteHuman = yinYangLu.createHuman(WhiteHuman.class);
        whilteHuman.getColor();
        whilteHuman.talk();
        
        System.out.println("造出的第二批人是黑色人种!");
        Human blackHuman = yinYangLu.createHuman(BlackHuman.class);
        blackHuman.getColor();
        blackHuman.talk();
        
        System.out.println("造出的第三批人是黄色人种!");
        Human yellowHuman = yinYangLu.createHuman(YellowHuman.class);
        yellowHuman.getColor();
        yellowHuman.talk();
        
    }

}

 

 

 

posted on 2013-06-22 18:35  精灵July  阅读(311)  评论(0编辑  收藏  举报

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